Recent research and development of fiber-optic grating writing technologies for sensing applications

ZHANG Xiang-dong; LI Yu-lin; WANG Wei-ping; HONG Xin-hua; PENG Wen-da; WU Cui-qin

To overcome the adverse circumstance of the fiber-optic gratings designed for communication used in sensing applications,based on the summarization of the general demands and characteristics of the sensing fiber-optic gratings,the writing technologies on several sensing fiber Bragg gratings such as those with good resistance property of high temperature,excellent enhancing/weakening sensitivity and high mechanical strength are described concretely.Then the UV-exposing,mechanical-distorting and IR-laser point-by-point inscripting methods for sensing long period fiber gratings are presented respectively.At last the trend of writing technologies for the sensing fiber-optic gratings is forecasted.

1. Xi'an Institute of Optics and Precision Mechanics, the Chinese Academy of Sciences, Xi'an 710068, China;

2. Opto-Electronics Institute, Shenzhen University, Shenzhen 518060, China;

3. the Second Artillery Engineering Institute, Xi'an 710065, China

Received Date: 2003-10-21

Accepted Date: 2003-12-09

Available Online: 2004-09-25

Abstract: To overcome the adverse circumstance of the fiber-optic gratings designed for communication used in sensing applications,based on the summarization of the general demands and characteristics of the sensing fiber-optic gratings,the writing technologies on several sensing fiber Bragg gratings such as those with good resistance property of high temperature,excellent enhancing/weakening sensitivity and high mechanical strength are described concretely.Then the UV-exposing,mechanical-distorting and IR-laser point-by-point inscripting methods for sensing long period fiber gratings are presented respectively.At last the trend of writing technologies for the sensing fiber-optic gratings is forecasted.

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Recent research and development of fiber-optic grating writing technologies for sensing applications

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